- Chronic Autoimmune Urticaria - Angioedema Treatment Hivesbr br Allergen, such as dust mites, perfume, perhaps br an allergy to your pet, spicy foods, alcohol, br sulphite's, excessive heat, the cold, tight br clothing, you name it...br br Trouble is this analogy is wrong, I shared the br same belief for years, which is why I couldn't br get rid of my urticaria.